66667442 has 8 divisors (see below), whose sum is σ = 100355376. Its totient is φ = 33215652.

The previous prime is 66667441. The next prime is 66667457. The reversal of 66667442 is 24476666.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 66667442.

It is not an unprimeable number, because it can be changed into a prime (66667441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58328 + ... + 59459.

It is an arithmetic number, because the mean of its divisors is an integer number (12544422).

Almost surely, 2^66667442 is an apocalyptic number.

66667442 is a deficient number, since it is larger than the sum of its proper divisors (33687934).

66667442 is a wasteful number, since it uses less digits than its factorization.

66667442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118072.

The product of its digits is 290304, while the sum is 41.

The square root of 66667442 is about 8165.0132884154. The cubic root of 66667442 is about 405.4817049434.

The spelling of 66667442 in words is "sixty-six million, six hundred sixty-seven thousand, four hundred forty-two".